Sun Tran Comprehensive Operational Analysis (COA) Study

The City of Tucson and Sun Tran, in partnership with the Pima Association of Governments (PAG), evaluated all aspects of Sun Tran, Sun Link, Sun Express, and Sun Shuttle services throughout Tucson and the greater Tucson area to determine potential improvements through the COA.

COA Service Changes

August 2025

Watch the video about Sun Tran’s COA August 2025 changes.

Watch the video to learn more about the implementation of Sun Tran’s COA changes.

Click here to view maps of august changes

Watch the video about the latest virtual public meeting.

Click the video to the right to view our latest virtual public input meeting:

February 2025

Route 3, 11, 37, and 50 will have changes beginning February 23, 2025.

Route 3 & 37

Route 37 will serve Stella Road between Pantano Road and Camino Seco instead of Route 3. Camino Seco from Stella Road and Irvington Road will now be served by Route 37. All service on Escalante Road has been discontinued. There are no frequency changes or service changes planned at this time.

View and Download Maps HERE

Route 11 & 50

Route 11 and Route 50 will merge and no longer travel on South 6th Avenue between Ajo Way and Laos Transit Center. Route 11 will now extend west on Ajo Way to Mission Road, discontinuing Route 50. There are no frequency changes or service changes planned at this time.

View and Download Map HERE

What We’ve Accomplished:

We have conducted a thorough engagement process with the community to gather valuable feedback. Here are the events that have taken place since 2024.

2024 – Following nearly 11 months of public outreach to gather input on proposed changes to improve transit efficiency, equity, and effectiveness, Sun Tran staff will host six (6) public meetings to discuss the Comprehensive Operational Analysis (COA) proposed transit changes.

In-Person Meetings:

Seven meetings allowed the community to share feedback in person. Here are the details:

Fred Archer Recreation Center
Tucson City Council Ward 2 Office
Woods Memorial Library
Pascua Yaqui Tribal Chambers
Miller-Golf Links Library
Quincie Douglas Recreation Center
Tucson City Council Ward 6 Office

March 2025 – Sun Tran hosted 9 in-person and two virtual Title VI Open House Meetings to engage with the community about equitable transit and upcoming service changes in August 2025. The following routes will be impacted: 2, 12, 16, 18, 21, 23, 24, 25, 26, 27, 29, and 62.